In hospital and mid-term outcome of patients with NIR stent implantation: Multicenter ESPORT-NIR registry

Background and objective. Despite improvements in the results and technique s of catheter-based revascularization, few studies have evaluated the clini cal results of the application of new stent designs. We describe the in-hos pital and mid-term outcome of patients undergoing a stent NIR implantation. Patients and method. At least 1 Stent NIR was implanted in 1.004 patients ( 1.136 lesions) recruited from 50 centers in an international, multicenter, prospective, registry (Spain and Portugal NlR stent registry). Inclusion cr iteria were objective coronary ischemia related to a severe de novo lesion or first restenosis in native vessels with a reference diameter greater tha n or equal to 2.75 mm. The primary endpoint was the incidence of major adve rse cardiac events within the first 7 months of follow-up. Results. The mean age of the patients was 60 years and 82% were male. Angio plasty was indicated due to unstable angina in 61% of the cases. Stent impl antation was successfully achieved in 99.6%. Clinical success (angiographic success without in-hospital major events) was achieved in 98.6% of patient s. The rate of angiographic restenosis (> 50% stenosis narrowing) was 16% ( CI 95%; 11.7-21.2). The accumulated major cardiac adverse event rate at sev en months of follow-up was 8.7%. death (0.9%), acute myocardial infarction (1.2%) and target lesion revascularization (6.6%). Conclusion. In the wide setting of the population included in the ESPORT-NI R registry, stent NIR implantation was a highly effective therapy with a go od mid-term clinical and angiographic outcome.